Now there's one more to add to the list: making paper planes. The automated Lego paper plane folding machine is the work of YouTuber Hknssn. Measuring 150cm long and 40cm wide, the machine, shown in the video below at around three times its actual speed, contains:

2x NXT

5x NXT servo motors

4x NXT colour sensors

3x NXT touch sensors

1x touch sensor multiplexor

1x NXT accelerometer sensor

1x NXT infrared (IR) link sensor

5x normal power function motors

5x XL power function motors

4x IR receivers

5x Battery boxes

About 6000-7000 Lego pieces

Apparently, the launching isn't really all that effective, but the folding part? That works really well.